I think Vermont - New Hampshire - Maine does well tomorrow with the severe threat. Not ruling it out for our area but it certainly looks more impressive for them.
I found this spreadsheet. Every single tornado between 1950 and 2017 across the united states. https://www.spc.noaa.gov/wcm/data/1950-2017_all_tornadoes.csv
I found it on this page https://www.spc.noaa.gov/wcm/#data
I will do some more research tonight but I believe there were more. Pre 1985 it may have just not been reported. That's what happening with the whole tornado alley moving east thing. There's always been tornadoes but more people are out there spotting and chasing so they can confirm visually.
I'm away from my computer until later this evening but if you go to the Upton nws website there is a database. You input the date range and you should find what you are looking for. If not, I can help later tonight.